What is this program, masters?

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Please translate the following text into English, and only return one translation result without any other unnecessary characters. Do not use the words 'pseudo-original' or 'rewrite': "https://hanhua.fun/

Want to find a program similar to a knowledge base with lots of text content. This looks good, but it's lacking in some way. If there are any suitable big shots who can recommend something, please thank you.